Gage-cock.



L. P. WELPLEY.

GAGE COCK.

APPLICATION FILED JUNE 14, 1913.

1,076,727 Patented Oct. 28, 1913.

.v I W v NITE STATES turrinvir OFFICE.

LAWRENCE r. WELFLEY, or" nin'roiv, WEST VIRGINIA.

GAGE-COG} Application filed Jane M; 1913. Serial No. 773,741.

Toall whom it may concern Be it knowii that I, LAwimNen 1. mm- LET, citizen of the United States, residing at Hinton, lVest Virginia, have invented certain iie'lvllltl useful Improvements in Gage-Cocks, of which the tollowiiig is a specification. i

The present invention relates to 1mprovements in gage cocks such as are commonly used on locomotive or other steam boilers.

The principal object of the invention is to provide a gage cock of the class described constructed in such a manner that the steam may be cut off from the main source and the valve parts witl'idrawn for the purpose of cleaning or repairing without necessitating a reduction of the pressure.

A further object consists in so constructing the various parts as to avoid danger of the gage cock becoming stopped up by the accumulation of mud, etc., which would render the device not only dangerous but inoperative.

l i ith these and other objects in view, the invention consists in the construction and arrangement of parts more fully described n the following specification, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure 1 1s a transverse longitudinal view with parts shown in section; Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1 looking to the left; and Fig. 3 is a similar view looking to the right.

Referring by reference characters to the drawing, the cock comprises a valve casing or main body 1 connected to the pipe stem 2, the latter being provlded w th external screw threads 2 by which it is permanently fitted into the boiler. A swivel connection is established between the parts 1 and 2 bv means of a collar 8 or other suit able meaiis which surrounds the enlarged head 2 of the pipe stem, and is screw threaded on the inner end of the valve. casing, as shown at 3. The tapered valve 6 is located within the central chamber 7 ot the casing, and in its closed position rests on the valve seat 7 formed therein. The valve stem 5 extends through the outer part of the casing in which it is screw threaded, as shown at 1, and terminates in the handle 8 bv means of which it is operated. Leading from the chamber 7 is a central longitudinal passage 9 which, at the inner end of the Specification of Letters Patent;

Patelitedoct. 28, 1913.

casing, tern'iinates in a bell-mouthed chainher 10 having an outwardly flared wall. The pipe stem. 2 is formed with a small longitudinal bore 11 inclined from the horizontal so as to be constantlyin register with the bell-mouthed chamber at a point near its outer periphery. A small metal lug 14 01. substantially conical shape is built up within the wall of the chamber 10 at its periphery, and is made integral with the main body 1. Apin 13 projects from the end of the stem Qinto the bell-mouthed chamber 10, and is positioned sutliciently near its outer Cll'C111Il fci'cnce as to lie in the path of the coneshaped lug, serving as a positive stop to limit the rotating movement oi the valve casing.

The parts 1 and 2, as have been described, are secured together with a swivel connection by the collar 3. The abutting vertical surfaces of the end of the stem 2 and the main body of the valve casing, including the end of the conical lug 1 1, form a ground joint, making any loss of steam by leakage at this junction impossible, and prevents corrosion and accumulation.

A small outlet stem 15 is formed at right angles to the valve casing. This stem is provided with a vertical central bore 16 which communicates with the chamber 7.

From the foregoing description the operation of the device is apparent. With the valve 6 open and the valve casing 1 turned in such position that the chamber 10 is in open communication with the port 11 of the stem 1, steam under pressure passes directly from the boiler through the port 11, chamber 10, port 9, chamber 7 and out the port 16. By turning the handle 8 the valve 6 seats itself upon the valve seat 7 and shuts oil the steam from the outlet stem 15. Should the valve 6 need repairing or cleaning, it is only necessary to rotate the valve casing 1 until the conical lug 14 covers the port 11, when the steam will be cut off without reducing the pressure at the boiler and the valve 6 can be removed entirely from the casing 1. The pin 13acts as a positive step limiting the rotation of the main body 1 for its open position with the port 11.

It will be noted that by inclining the port 11 so as to register with the chamber 10 near its outer circumference, open co1ninunication is assured between the two passages 11 and 9 during the greater part of the rotation of the valve casing. A further point of vantage gained by forming the chamber 10 with an outwardly flaring wall is that accumulation of mud therein is precluded.

What I claim is:

1. A gage-cock comprising two parts, one part adapted to enter the boiler, the other part having a swivel connection with the first part and provided with an outlet port and a shut-oii valve controlling same, one part being adapted to be rotated in relation to the other part for shutting off the steam independently of the shut-0E valve, and means carried on the one part adapted to contact with the other partto limit the rotary movement of the other part after said closure has been effected, substantially as described.

2. A gage-cock comprising in combination a pipe stem permanently secured in a boiler, a main body portion having an outlet stem, a shut-off valve therefor, said main body portion and pipe stem having a swiveled connection With each other, a central port within said main body leading from said valve and terminating in abell-mouthed chamber, an inclined port Within said pipe stem adapted to normally register eccentrically. with said bell-mouthed chamber, a small built up lug formed integral with the wall of said bell-mouthed chamber, adapted to close communication between said inclined port of the stem and said bell-mouthed passage upon rotation of the body portion, and means carried by said stem portion to limit the rotary movement of said body portion after said closure has been efi'ected, substantially is described.

In testimony whereof, I afiix my signature in presence of tWo witnesses.

LAWRENCE P. WELFLEY.

Witnesses L. M. MEADAR, F. P. GRANT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

